Home / 21,282,403.60-31,917,384.60-7,633,968.40

Finding the Fourth Proportional to 21,282,403.60, 31,917,384.60 and 7,633,968.40

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Solution

The fourth proportional to 21,282,403.60, 31,917,384.60 and 7,633,968.40 is: 11,448,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282,403.60 : 31,917,384.60 = 7,633,968.40 : x
  2. Step 2: Convert to fraction form
    21,282,403.60/31,917,384.60 = 7,633,968.40/x
  3. Step 3: Cross multiply
    21,282,403.60x = 31,917,384.60 × 7,633,968.40
  4. Step 4: Simplify right side
    21,282,403.60x = 243,656,305,447,046.66
  5. Step 5: Solve for x
    x = 243,656,305,447,046.66/21,282,403.60
  6. Step 6: Final answer
    x = 11,448,721.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.